How we approach flat rooflights in Altrincham
For Altrincham homes and buildings we offer flat rooflights: fixed double or triple glazed rooflights for flat roofs and extensions. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
The North West gets more rain than most of England, so upstand height, membrane detailing and rain sensors on opening units are not optional extras. Think of flat rooflights for kitchen extensions, side returns and flat-roofed back rooms.
We work across Greater Manchester, including Altrincham, and in neighbouring towns such as Sale and Urmston. Access, parking and how the glass reaches the roof are all checked at the survey.
Options we can specify in Altrincham
- Insulated kerb or timber upstand built to suit
- Square, rectangular or long-format sizes
- Solar-control or self-cleaning outer pane
- Plastered or lined internal reveal
- Frame colours: anthracite, black, white or RAL
- Fixed units are simple, quiet and low-maintenance
- Slim sightlines from inside — mostly glass, little frame
Before you order: points to check
- Rooflights count toward glazing in an extension, which matters for Building Regulations energy and overheating rules
- The roof membrane must be dressed up the upstand before the unit goes on
Do you need permission in Altrincham?
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Our planning guide covers each nation in more detail.
Flat rooflights prices in Altrincham
Guide prices for flat rooflights in Altrincham are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or triple glazed (1500 × 2500 mm and up) | £2,395 – £4,195 | £1,995 – £3,495 |
| Mid-size double glazed (1000 × 2000 mm) Typical | £1,675 – £2,395 | £1,395 – £1,995 |
| Small double glazed (up to 1000 × 1000 mm) | £1,195 – £1,795 | £995 – £1,495 |
How the job runs
- Tell us what you have. Send the WA14 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Altrincham, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Nearby towns
More we do in Altrincham
Common questions
Can a flat rooflight be walked on?
Not unless it is designed as a walk-on unit with structural laminated glass. A standard flat rooflight is for light only — if the roof is used as a terrace, choose a walk-on rooflight instead.
Can you fit into my existing flat roof?
Yes. We form a new opening, trim the joists, build and waterproof an upstand and make good the ceiling. A survey confirms the joist direction and roof build-up first.
Will it make the room too hot?
A big unglazed-to-sky area can add solar gain in summer. Solar-control glass, a blind, or pairing a fixed unit with an opening one keeps it comfortable.
Can you work alongside my builder in Altrincham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you fit flat rooflights in Altrincham?
Yes. We survey and fit flat rooflights in Altrincham and across Greater Manchester. Send your postcode and we will offer a survey date when we reply.
